move extractor to func/

floatimg.h

@@ -4,13 +4,13 @@
  *	http://la.buvette.org/photos/cumul
  */
 
-#define		FIMG_VERSION	134
+#define		FIMG_VERSION	135
 
 /*
  *	in memory descriptor
  */
 typedef struct {
-	int		magic;
+	unsigned long	magic;
 	int		width;
 	int		height;
 	int		type;
@@ -28,6 +28,12 @@ typedef struct {
 	int		w, h, t;
 	} FimgFileHead;
 
+typedef struct {
+	unsigned long	magic;
+	int		w, h;
+	int		x, y;
+	int		flags;
+	} Rectangle;
 
 #define FIMG_TYPE_GRAY			1
 #define FIMG_TYPE_RGB			3
@@ -160,6 +166,7 @@ int fimg_desaturate(FloatImg *src, FloatImg *dst, int notused);
 /*	module funcs/geometry.c		*/
 int fimg_halfsize_0(FloatImg *src, FloatImg *dst, int notused);
 int fimg_halfsize_1(FloatImg *src, FloatImg *dst, int notused);
+int fimg_extractor(FloatImg *in, FloatImg *out, Rectangle *rect);
 
 int fimg_displacement_0(FloatImg *psrc, FloatImg *pdst, int flags);
 
@@ -209,6 +216,7 @@ int   fimg_multirandom(FloatImg *fimg, long nbpass);
 void fimg_print_minmax(float minmax[6], char *titre);
 int parse_WxH(char *str, int *pw, int *ph);
 int parse_double(char *str, double *dptr);
+int parse_rectangle(char *str, Rectangle *r, int notused);
 int format_from_extension(char *fname);
 char * extension_from_format(int fmt);